This Form A Key measures 5/16 x 5/16 x 1-1/2 inches and is made from carbon steel, providing excellent strength and durability for various mechanical applications. Designed for use in keyways, this key ensures a secure connection between shafts and hubs, preventing slippage and ensuring efficient power transmission. The precision dimensions meet industry standards, making it compatible with a wide range of equipment. Its plain finish allows for easy integration into existing assemblies. This key is essential for maintaining the integrity of rotating machinery and is ideal for both new installations and repairs.